From 508507e6846eaed4c71ed1dbbca7fa8cecbc1654 Mon Sep 17 00:00:00 2001
From: Stewart Allen <stewart.allen@gmail.com>
Date: Sat, 27 Jul 2024 17:55:34 -0400
Subject: [PATCH] fix gerber open poly offsetting

---
 src/load/gbr.js  | 2 +-
 src/main/mesh.js | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/load/gbr.js b/src/load/gbr.js
index d62b3a1e..45497112 100644
--- a/src/load/gbr.js
+++ b/src/load/gbr.js
@@ -87,7 +87,7 @@ function toMesh(text, opt = {}) {
     // copper traces (expand first since open)
     const open_exp = open.map(poly => {
         const diam = poly.tool?.shape?.diameter;
-        return diam ? poly.offset_open(diam, 'round') : null;
+        return diam ? poly.offset_open(diam / 2, 'round') : null;
     }).filter(p => p).flat();
 
     // union open trace expansions
diff --git a/src/main/mesh.js b/src/main/mesh.js
index f662f6e2..6f66371d 100644
--- a/src/main/mesh.js
+++ b/src/main/mesh.js
@@ -483,7 +483,7 @@ function load_files(files) {
                 let { circs, closed, open, rects } = layer;
                 open = open.map(poly => {
                     const diam = poly.tool?.shape?.diameter;
-                    return diam ? poly.offset_open(diam, 'round') : null;
+                    return diam ? poly.offset_open(diam / 2, 'round') : null;
                 }).filter(p => p).flat();
                 for (let set of [ closed, open, circs, rects ]) {
                     let group = Date.now().toString(36);